Patents Assigned to Valcom Limited
  • Patent number: 4500888
    Abstract: A free standing antenna formed with an elongated tubular body portion, having one or more sections, and an enlarged base portion at its lower end for mounting thereof, and the body portion having a plurality of layers or reinforcing filaments, some of the layers being bundles of longitudinal filament rovings running lengthwise, and others of the layers being generally circumferential windings of filament rovings, the layers being bonded together by resin material; electrically conductive elements embedded in the tubular structure, and running from end to end, an annular electrically conductive collar connected to the conductive elements adjacent the lower end of the structure, a female threaded socket connected to the collar, and extending through a wall of the tubular structure for connection from the exterior, at least one layer of woven reinforcing filament cloth material extending up the interior of the tubular structure adjacent the lower end, and overlying the interior of the collar, and, resin bonding
    Type: Grant
    Filed: February 25, 1983
    Date of Patent: February 19, 1985
    Assignee: Valcom Limited
    Inventor: Don E. Brandigampola
  • Patent number: 4300140
    Abstract: A freestanding glass fibre antenna having at least two antenna sections, a lower section having a mounting base and a coupling at the upper end, and having linear radiating members of conductive material, and an upper section having a cooperating coupling at the lower end, and incorporating a single radiating element formed of conductive material, arranged in a helically wound coil fashion having a plurality of turns, and embedded permanently in the glass fibre material of such antenna, the coil wound radiating element being arranged to tune the antenna to the desired frequency range.
    Type: Grant
    Filed: April 2, 1980
    Date of Patent: November 10, 1981
    Assignee: Valcom Limited
    Inventor: Don E. Brandigampola